Understanding Telephony Routing And Translations; Telephony Routing Concepts; Subdomains - Nortel 5100 User Manual

Appendix B
Understanding Telephony Routing and
Translations
This section provides a basic understanding of how to provision telephony style
translations interworking with traditional circuit-switched network routing.
This section includes the following topics:
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Telephony routing concepts

The basic function of any communications equipment is routing, and SIP-based
systems add requirements to routing when compared to traditional
circuit-switched network-based routing. Routing in the VoIP networks adds the
complexity of integrating with the traditional circuit-switched networks and
domain-based VoIP/SIP networks.

Subdomains

With subdomains, you can group users into smaller routing groups. For example,
Nortel can have a single system supporting a Richardson domain and an Ottawa
domain. Users within Nortel are assigned to subdomains but can be reached by
just using the top domain. The concept of SIP subdomains is similar to the email
domains used within an enterprise.
"Telephony routing concepts" on page 217
"Telephony routing terminology" on page 220
"Sample dial plan for telephony routes" on page 223
"Telephony route provisioning scenario and examples" on page 226
Provisioning Client User Guide
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